Delta Labs - Level 1: Union Aerospace Research Division

"Marine, this is Kelly. If you're watching this, you're tougher than I thought. I guess things aren't always what they seem... Plans have changed, Delta Complex 1's been compromised, you're not safe there. I'm moving to secure Service Tunnel 1. It's not far from your position. We'll meet there..."

- Sergeant Kelly

Delta Labs - Level 1: Union Aerospace Research Division is the fifteenth level of Doom 3. This level contains no demon altercations of any kind for quite some time upon entering it, save some "minor" demonic sounds and lights in some halls and monsters appearing outside from time to time. The Player must initiate power by turning on the main reactor. Chain gun commandos are first encountered in this level.

Summary
The marine enters the Delta Labs, which have been thoroughly wrecked and have lost the main power. As the marine ventures into the complex, he has several frightening, but harmless supernatural experiences. He also hears demons all around him, but is not attacked. After retrieving a data linker from the lobby and installing it at the Systems Control, he finds a cryptic video message left behind by Sergeant Kelly who warns him that the Delta Complex has been compromised. Kelly advises the marine to meet up with him in Service Tunnel 1. After the message from Kelly is viewed, enemies start attacking.

In order to proceed further into the facility, the marine must first restore the power, and must battle their way to the main reactor. On the way there, the marine finds the Service Tunnel 1, but the Sarge is nowhere to be found. After the marine manages to find the reactor and restore the power, he returns to the lobby. With the elevators now working, the marine proceeds to sector 2.

Areas

 * Delta Transfer Bay
 * Delta Entryway
 * Delta Control Corridor
 * Delta Systems Control
 * Delta Main Lobby
 * Delta Lobby Corridor
 * Delta 1 Access Lobby
 * Delta 1 Access Stairs
 * Delta 1 Service Hallway
 * Delta 1 Service Area 1
 * Delta 1 Service Area 2
 * Delta Service Warehouse
 * Storage Room 21-D
 * Delta Service Tunnel 2
 * Delta Reactor Support
 * Reactor Support Hallway
 * Delta Reactor Room
 * Reactor Control Hallway
 * Delta Reactor Control
 * Reactor Service Access
 * Delta Reactor Engineering
 * Delta Service Tunnel 1
 * Left Access and Storage
 * Delta Authority Systems
 * Delta Service Elevator
 * Delta Authority Junction
 * Delta Authority Archives
 * Delta Authority Lobby
 * Delta Authority Hallway 1
 * Delta Labs Main Elevator

Objectives

 * Delta Power Failure
 * Restore Power to the Delta Labs


 * Retrieve Data Linker
 * Retrieve the Data Linker to allow Delta Lab Control Access


 * Reactor Control Room
 * Locate Reactor Control Room


 * Delta Main Elevator
 * Find a way back to the Delta Main Lobby Elevators. These Elevators will allow access to the lower Delta Levels.

Characters

 * UAC announcer
 * Sergeant Kelly
 * Malcolm Betruger (voice only)

PDAs

 * Robert Price. Found in Delta Entryway.
 * Brian Mora. Found in Delta Reactor Room.

Enemies
The enemy count on Nightmare is the same as on Veteran. The only change in the monster amount in BFG Edition is the removal of two cacodemons from the level.

Items
The item count on Nightmare is the same as on Veteran, except the med kits are absent. There are no changes in the amount of items in the BFG Edition. * Contains bullets (20), shells (8), clip (40), grenades (4), health (50).

There are also three health stations on the level, two with 80 health in reserve, and one with 60 health (in the BFG Edition the health station that had 60 health now has 100).

Starting inventory
If the player starts the level via a console command, they will start with these items:

Locker codes
For the sources of the codes, see Doom 3 locker codes.
 * Storage locker #21D - Delta Labs: 298. Contains: med kit (large), security armor x2, shells (large), rockets (large).

Secrets

 * In Delta Reactor Support (a corridor) there's a ladder to the left side (from the direction the player is coming from), which leads to a small confined area with a med kit and a zombie in it.
 * In Reactor Service Access room, on the highest floor one can jump over the railing to get some supplies lying below the floor.
 * In Delta Authority Systems room (the one with the elevator in it), there's a gap in the floor with pipes in it and an armor suit sitting under the floor plates.

Trivia

 * On the original Xbox version of the game this level was divided into two parts: Delta Labs - Level 1 East and Delta Labs - Level 1 West.
 * There is a secret imp in Delta Service Tunnel 1. You can trigger it by pushing an object (closest being the mop bucket in Delta Authority Systems) up to the three crates, then climbing on them.